specify error

[sand honers]

sys:1: PyGIWarning: Wnck was imported without specifying a version first. Use gi.require_version('Wnck', '3.0') before import to ensure that the right version gets loaded.
sys:1: PyGIWarning: GdkX11 was imported without specifying a version first. Use gi.require_version('GdkX11', '3.0') before import to ensure that the right version gets loaded.
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
sand@sand-pc:~$ [13548:13548:0117/212355:ERROR:background_mode_manager_aura.cc(14)] Not implemented reached in virtual void BackgroundModeManager::EnableLaunchOnStartup(bool)
[13548:13779:0117/212403:ERROR:cert_verify_proc_nss.cc(922)] CERT_PKIXVerifyCert for 192.168.1.9 failed err=-8179

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: gnome-terminal 3.18.2-1ubuntu2
ProcVersionSignature: Ubuntu 4.2.0-19.23-generic 4.2.6
Uname: Linux 4.2.0-19-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.19.2-0ubuntu6
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Jan 17 21:22:04 2016
ExecutablePath: /usr/lib/gnome-terminal/gnome-terminal-server
InstallationDate: Installed on 2015-11-23 (55 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
ProcEnviron:
 XDG_RUNTIME_DIR=<set>
 SHELL=/bin/bash
 LANGUAGE=en_US
 PATH=(custom, no user)
 LANG=en_US.UTF-8
SourcePackage: gnome-terminal
UpgradeStatus: Upgraded to xenial on 2015-11-25 (53 days ago)

[Egmont Koblinger (egmont-gmail)]

Rationale: https://bugzilla.gnome.org/show_bug.cgi?id=727379

[Egmont Koblinger (egmont-gmail)]

Note: the bug report is about Ubuntu's (or Debian's?) custom wrapper script, not mainstream gnome-terminal.

[Marius Gedminas (mgedmin)]

What are the steps to reproduce this? When I run gnome-terminal in a terminal window in 17.10 all I get is

  Warning: DESKTOP_STARTUP_ID not set and no fallback available.

This doesn't change if I export PYTHONWARNINGS=all beforehand.